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Model UT803: OPERATING MANUAL

1

Overview
Unpacking Inspection
Safety Information
Rules For Safe Operation
International Electrical Symbols
The Meter Structure
Rotary Switch
Functional Buttons
Display Symbols
Measurement Operation
A. DC or AC Voltage Measurement
B. DC or AC Current Measurement
C. Measuring Resistance
D. Testing for Continuity
E. Testing Diodes
F. Capacitance Measurement
G. Frequency Measurement
H. Temperature Measurement
I . Measuring Transistor
Operation of Hold Mode
The POWER Button
The SELECT Button
Turning on the Display Backlight
The RANGE Button
The MAX MIN Button
AC/AC+DC Button

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Содержание UT803

Страница 1: ...Model UT803 OPERATING MANUAL ...

Страница 2: ......

Страница 3: ... Structure Rotary Switch Functional Buttons Display Symbols Measurement Operation A DC or AC Voltage Measurement B DC or AC Current Measurement C Measuring Resistance D Testing for Continuity E Testing Diodes F Capacitance Measurement G Frequency Measurement H Temperature Measurement I Measuring Transistor Operation of Hold Mode The POWER Button The SELECT Button Turning on the Display Backlight T...

Страница 4: ...t E Resistance F Continuity Test G Diode Test H Capacitance I Frequency J Temperature K Transistor Maintenance A General Service B Replacing the Fuses C Replacing the Battery RS232C and USB Serial Port System Requirements for Installing the UT803 Interface Program RS232C Serial Port A Connecting between the Meter and computer B RS232C Port Cable C Setting of RS232C Serial Ports USB Serial Port A C...

Страница 5: ...ch has a unique outlook design In addition to all the conventional features including DC AC voltage current resistance diode continuity test capacitance temperature 0C and 0F transistor max min there is a data hold low battery display sleep mode RS232C and USB standard serial port for easy connection with computer to realize macro recording and monitoring and capture of transient dynamic data disp...

Страница 6: ...se contact your dealer immediately Model UT803 OPERATING MANUAL Operating Manual Test Lead Alligator Clip Multi Purpose Socket Point Contact Temperature Probe to be used under 2300 C temperature measurement Power Cord AC 250V RS232C Interface Cable USB Interface Cable Installation Guide Computer Interface Software CD ROM 1 2 3 4 5 6 7 8 9 1 piece 1 pair 1 pair 1 piece 1 piece 1 piece 1 piece 1 pie...

Страница 7: ...ad lines cable systems etc Use the Meter only as specified in this operating manual otherwise the protection provided by the Meter may be impaired In this manual a Warning identifies conditions and actions that pose hazards to the user or may damage the Meter or the equipment under test A Note identifies the information that user should pay attention on International electrical symbols used on the...

Страница 8: ...f range shall be made during measurement is conducted to prevent damage of the Meter When the Meter working at an effective voltage over 60V in DC or 30V rms in AC special care should be taken for there is danger of electric shock Use the proper terminals function and range for your measurements If the value to be measured is unknown use the maximum measurement position and reduce the range step b...

Страница 9: ...t be altered at will to avoid damage of the Meter and any accident Soft cloth and mild detergent should be used to clean the surface of the Meter when servicing No abrasive and solvent should be used to prevent the surface of the Meter from corrosion damage and accident The Meter is suitable for indoor use Turn the Meter power off when it is not in use Take out the battery when not using for a lon...

Страница 10: ...ANUAL International Electrical Symbols AC or DC Grounding Double Insulated Warning Refer to the Operating Manual Deficiency of Built In Battery Continuity Test Diode Capacitance Test Fuse Conforms to Standards of European Union ...

Страница 11: ...9 The Meter Structure see figure 1 1 LCD Display 2 Rotary Switch 3 Input Terminals 4 Functional Buttons Model UT803 OPERATING MANUAL Figure 1 ...

Страница 12: ...nt Capacitance test Frequency measurement Temperature in Fahrenheit Temperature in celsius Transistor test AC or DC current measurement range from 0 1uA to 5999uA AC or DC current measurement range from 0 01mA to 599 9mA AC or DC current measurement range from 0 01A to 10 00A V mA A A Model UT803 OPERATING MANUAL Rotary Switch Position Function Hz 0 F 0 C hFE Hz 0 F ...

Страница 13: ... frequency and Fahrenheit temperature Press HOLD to enter and exit the Hold mode in any mode the Meter beeps Press RANGE to switch between manual and auto ranging Turn on or off the serial port interface without changing the original setting Starts recording of maximum and minimum values Steps the display through high MAX and low MIN To select AC or AC DC measurement Model UT803 OPERATING MANUAL B...

Страница 14: ...12 HOLD hFE MIN MAX RS232 AC DC Trus RMS Auto Range Manual Trms 0 C umVA DC munF 0 F mV Mk Hz 12 10 1 11 5 6 7 14 2 16 13 3 4 8 9 15 Model UT803 OPERATING MANUAL Display Symbols see figure 2 Figure 2 ...

Страница 15: ...tive reading Indicator for AC voltage or current Indicator for DC voltage or current Indicator for AC DC measurement The input value is too large for the selected range Ohm The unit of resistance kilohm 1 x 103 or 1000 ohms Megaohm 1x106 or 1 000 000 ohms A Amperes amps The unit of current mA Milliamp 1 x 10 3 or 0 001 amperes µA Microamp 1x 10 6 or 0 000001 amperes 1 2 3 4 5 6 7 8 9 K M ...

Страница 16: ... 0 001 farads µF Microfarad 1x10 6 or 0 000001 farads nF Nanofarad 1 x 10 9 or 0 000000001 farads Centigrade temperature Temperature in Fahrenheit Hz Hertz The unit of frequency in cycles second kHz Kilohertz 1 x 103 or 1 000 hertz MHz Megahertz 1 x 106 or 1 000 000 hertz Unit of transistor Test of diode The continuity buzzer is on 9 10 11 V mV F mF µF nF 0 C 0 F Hz kHz MHz β ...

Страница 17: ... Auto or manual range Display of maximum or minimum value Data output is in progress The battery is low Warning To avoid false readings which could lead to possible electric shock or personal injury replace the battery as soon as the battery indicator appears Transistor test is on MAX RS232 MIN hFE ...

Страница 18: ...ANUAL 1 2 3 Insert the red test lead into the V terminal and the black test lead into the COM terminal If the measured value is less than 600mV insert the red test lead into mV terminal instead and press RANGE button to select manual range 600 0mV mode the LCD displays MANUAL and mV Set the rotary switch to V press SELECT button to select DC or AC measurement mode Connect the test leads across wit...

Страница 19: ...use measurement errors in high impedance circuits If the circuit impedance is less than or equal to 10k the error is negligible 0 1 or less When DC AC voltage measurement has been completed disconnect the connection between the testing leads and the circuit under test and remove the testing leads away from the input terminals of the Meter 17 Model UT803 OPERATING MANUAL l l ...

Страница 20: ...ected to the current terminals do not parallel them across any circuit To measure current do the following 18 Model UT803 OPERATING MANUAL 1 2 3 4 Insert the red test lead into the µA mA terminal and the black test lead into the COM terminal Set the rotary switch to an appropriate measurement position in µA mA or A press SELECT button to select AC or DC measurement mode Connect the test leads in s...

Страница 21: ... each measurement time of high current 5A should be less than 10 seconds and the interval time between 2 measurements should be greater than 15 minutes When current measurement has been completed disconnect the connection between the testing leads and the circuit under test and remove the testing leads away from the input terminals of the Meter 19 Model UT803 OPERATING MANUAL l l l ...

Страница 22: ...lease do not attempt to input voltages higher than 60V DC or 30V AC To measure resistance connect the Meter as follows 20 Model UT803 OPERATING MANUAL Insert the red test lead into the terminal and the black test lead into the COM terminal Set the rotary switch to press SELECT button to select measurement mode Connect the test leads across with the object being measured The measured value shows on...

Страница 23: ...loose test leads incorrect function selection or any other reasons When measuring high resistance 1M it is normal to take several seconds to obtain a stable reading In order to obtain stable reading choose shorter test lead to carrying out measurement The LCD displays OL indicating open circuit for the tested resistor or the resistor value is higher than the maximum range of the Meter Model UT803 ...

Страница 24: ...er as below 22 Model UT803 OPERATING MANUAL 1 2 3 4 Insert the red test lead into the terminal and the black test lead into the COM terminal Set the rotary switch to and press SELECT button to select measurement mode Connect the test lead across with the object being measured The buzzer sounds if the resistance of a circuit under test is 70 the circuit is in good condition The buzzer does not soun...

Страница 25: ... range is 600 When continuity testing has been completed disconnect the connection between the testing leads and the circuit under test and remove the testing leads away from the input terminals of the Meter 23 Model UT803 OPERATING MANUAL l l ...

Страница 26: ...iodes To avoid harms to you please do not attempt to input voltages higher than 60V DC or 30V AC Use the diode test to check diodes transistors and other semiconductor devices The diode test sends a current through the semiconductor junction and then measures the voltage drop across the junction A good silicon junction drops between 0 5V and 0 8V 24 Model UT803 OPERATING MANUAL Figure 7 ...

Страница 27: ...UAL Insert the red test lead into terminal and the black test lead into the COM terminal Set the rotary switch to and press SELECT button to select measurement mode For forward voltage drop readings on any semiconductor component place the red test lead on the component s anode and place the black test lead on the component s cathode The measured value shows on the display 1 2 3 When diode testing...

Страница 28: ...itance Use the DC Voltage function to confirm that the capacitor is discharged To measure capacitance connect the Meter as follows 1 Insert the red test lead into the Hz mV terminal and the black test lead into the COM terminal 2 Set the rotary switch to 3 Connect the test leads across with the object being measured The measured value shows on the display 26 Model UT803 OPERATING MANUAL Figure 8 ...

Страница 29: ...f the multi purpose socket When measuring small capacitor value more accurate value can be obtained using multi purpose socket It is normal to take a longer time when testing a capacitor value higher than 600µF The LCD displays OL indicating the tested capacitor is shorted or it exceeds the maximum range 27 Model UT803 OPERATING MANUAL When capacitance measurement has been completed disconnect the...

Страница 30: ...equency connect the Meter as follows 28 Model UT803 OPERATING MANUAL 1 2 3 Insert the red test lead into the Hz terminal and the black test lead into the COM terminal Set the rotary switch to Hz0 F and press SELECT button to select Hz measurement mode Connect the test leads across with the object being measured The measured value shows on the display Figure 9 ...

Страница 31: ...0V rms When 1Mz 10MHz 300mV a 30V rms When 10Mz 50MHz 600mV a 30V rms When 50Mz Unspecified When frequency measurement has been completed disconnect the connection between the testing leads and the circuit under test and remove the testing leads away from the input terminals of the Meter Model UT803 OPERATING MANUAL l l ...

Страница 32: ...ry switch to 0 C to measure degree celsius temperature or Hz0 F and press SELECT button to select 0 F measurement mode to measure Fahrenheit temperature Insert the multi purpose socket into the corresponding Hz and COM terminal Insert the temperature probe to the corresponding input terminal of the multi purpose socket Place the temperature probe to the object being measured The measured value sho...

Страница 33: ...point contact temperature probe can only be used under 2300 C For any measurement higher than that the rod type temperature probe must be used instead Model UT803 OPERATING MANUAL When temperature measurement has been completed disconnect the connection between the temperature probe multi purpose socket and the circuit under test and remove the temperature probe away from the input terminals of th...

Страница 34: ...ocket and remove the multi purpose scoket from the input terminal To measure transistor connect the Meter as follows Model UT803 OPERATING MANUAL Insert the multi purpose socket into the µAmA and Hz input terminal Set the rotary switch to hFE Insert the NPN or PNP type transistor to be tested into the corresponding input terminals of the multi purpose socket The measured nearest transistor value s...

Страница 35: ...ress HOLD again to exit Hold mode and the Meter displays the present measurement value In Hold mode is displayed The POWER Button This is a self lock switch uses to turn on or off the power of the Meter It is located at the tail of the Meter I means power up the Meter while O means power off the Meter The SELECT Button It uses for selecting the required measurement function when there is more than...

Страница 36: ...rn the Display Backlight on Press LIGHT button again to turn the Display Backlight off otherwise it will stay on continuously When using the AC power to turn the Meter on the Display Backlight always stays on The RANGE Button Press RANGE to enter the manual ranging mode the Meter beeps Press and hold RANGE for over 1 second to return to autoranging the Meter beeps Model UT803 OPERATING MANUAL l l ...

Страница 37: ... and hold MAX MIN for over 1 second to exit the MAX MIN mode AC AC DC Button It is used to select measuring AC or AC DC when measuring AC Press it only at the AC voltage or current measuring mode which is at the rotary switch position V mV µA mA or A DC will be displayed when it is pressed under DC measurement mode POWER INPUT Switch It is used to select AC 220V 50Hz or DC 6pcs of 1 5V battery R14...

Страница 38: ...the Meter However it will start from the switch selected function and it will not display the last measurement value before it entered sleep mode To disable the Sleep Mode function press MAX MIN RANGE or RS232 button while turning on the Meter the symbol disappears RS232 Button Press RS232 button to enter or exit data output mode In RS232C serial port data output mode the Hold and Max Min mode can...

Страница 39: ... Range Manual or auto ranging Polarity Display Auto Overloading Display OL Temperature Operating 00 C to 400 C 320 F to 1040 F Storage 100 C to 500 C 140 F to 1220 F Relative Humidity 75 00 C 300 C below 50 30 400 C Altitude Operating 2000 m Storage 10000 m Below 1V m electrostatic discharge Accuracy specified accuracy 5 of the range Over 1V m electrostatic discharge Without specified accuracy Pow...

Страница 40: ...ity not more than 75 RH Temperature coefficient 0 1 x specified accuracy 10 C Remarks Input Impedance At 600mV range Around 3000M At all other ranges Around 10M Model UT803 OPERATING MANUAL A DC Voltage Range Resolution Accuracy Overload Protection l 600mV 6V 60V 600V 1000V 0 1mV 0 001V 0 01V 0 1V 1V 1000V 0 6 2 0 3 2 0 5 3 ...

Страница 41: ... Protection 40Hz 50kHz 0 6 5 50kHZ 100kHz 1 5 40Hz 1kHz 0 6 5 1kHz 10kHz 1 0 5 10kHz 100kHz 3 5 40Hz 1kHz 0 6 5 1kHz 10kHz 1 5 5 10kHz 20kHz 3 5 20kHz 100kHz 8 5 40Hz 1kHz 0 6 5 1kHz 10kHz 3 5 5 40Hz 1kHz 1 2 3 1kHz 3kHz 3 3 600mV 6V 60V 600V 1000V 0 1mV 0 001V 0 01V 0 1V 1V 1000V ...

Страница 42: ...Displays True RMS applicable to the range of 10 95 At 1000V range AC peak factor 1 5 All other ranges AC peak factor 3 0 Input short circuit has around less than 30 remaining digits it will not affect accuracy AC DC measurement accuracy range s accuracy 1 Model UT803 OPERATING MANUAL l l ...

Страница 43: ...ement 10 seconds and interval not less than 15 minutes 41 Model UT803 OPERATING MANUAL C DC Current l l Range Resolution Accuracy Overload Protection 600µA 6000µA 60mA 600mA 10A 0 1µA 1µA 0 01mA 0 1mA 10mA 0 5 3 0 8 3 1 2 3 Fuse 500mA 250V fast type φ5x20mm Fuse 10A 250V fast type φ5x20mm ...

Страница 44: ...rt circuit has around less than 30 remaining digits it will not affect accuracy AC DC measurement accuracy range s accuracy 1 42 Fuse 500mA 250V fast type 5x20mm Fuse 10A 250V fast type 5x20mm Model UT803 OPERATING MANUAL D AC Current l l l Range Resolution Accuracy Overload Protection 600µA 6000µA 60mA 600mA 10A 0 1µA 1µA 0 01mA 0 1mA 10mA 40Hz 10kHz 1 0 5 10kHz 15kHz 2 5 40Hz 10kHz 1 5 10kHz 15k...

Страница 45: ...est lead short circuit resistance value 0 5 2 0 8 2 1 2 3 Model UT803 OPERATING MANUAL E Resistance Range Resolution Accuracy Overload Protection 600 6k 60k 600k 6M 60M 0 1 0 001k 0 01k 0 1k 0 001M 0 01M 250V rms ...

Страница 46: ...s in good connection with resistance value 70 buzzer beeps continuously Open circuit voltage approximate 2 7V Working current approximate 1mA Model UT803 OPERATING MANUAL F Continuity Test G Diode Testst 10mV 250V rms Remarks Range Resolution Overload Protection l l l 250V rms 1 Remarks Range Resolution Overload Protection l l ...

Страница 47: ...ract the test lead open circuit capacitance value 45 Model UT803 OPERATING MANUAL H Capacitance l Range Resolution Accuracy Overload Protection 0 001nF 0 01nF 0 1nF 0 001µF 0 01µF 0 1µF 0 001mF 6nF 60nF 600nF 6µF 60µF 600µF 6mF 2 5 5 2 5 3 4 5 4 250V rms ...

Страница 48: ...30V rms When 1MHz 10MHz 300mV a 30V rms When 10MHz 50MHz 600mV a 30V rms When 50MHz Unspecified 46 Model UT803 OPERATING MANUAL I Frequency l Range Resolution Accuracy Overload Protection 6kHz 60kHz 600kHz 6MHz 60MHz 0 001kHz 0 01kHz 0 1kHz 0 001MHz 0 01MHz 0 1 3 250V rms ...

Страница 49: ...ad 47 Fuse 200mA 250V fast type 5x20mm Fuse 500mA 250V fast type 5x20mm Model UT803 OPERATING MANUAL K Transistor J Temperature l hFE 1 Vce 2 2V bo 10µA 1000 MAX Range Resolution Accuracy Overload Protection 400 C 00 C 00 C 4000 C 4000 C 10000 C 400 C 320 C 320 F 7520 F 7520 F 18320 F 8 5 1 3 1 5 3 8 5 1 5 5 2 5 5 0 C 0 F 10 C 10 F 250V rms Remarks Range Resolution Overload Protection l l β ...

Страница 50: ...r do you get water inside the case A General Service Periodically wipe the case with a damp cloth and mild detergent Do not use abrasives or solvents To clean the terminals with cotton bar with detergent as dirt or moisture in the terminals can affect readings Turn off the power of the Meter when it is not in use Take out the battery when it is using for a long time Do not use or store the Meter i...

Страница 51: ...2 Fuse 1 Remove the screws from the power socket at the rear of the Meter Remove the fuse by gently prying one end loose then take out the fuse from its bracket Then install the replacement fuse Fuse 2 and 3 Use a coin to open the accessories compartment at the top of the front cover then you will see a fuse compartment Open the fuse compartment to replace fuse 2 and 3 Remove the fuse by gently pr...

Страница 52: ...rying one end loose then take out the fuse from its bracket Then install the replacement fuse Install ONLY replacement fuses with the identical type and specification as follows and make sure the fuse is fixed firmly in the bracket Fuse 1 200mA 250V fast type 5x20mm AC220V Fuse 2 10A 250V fast type 5x20 mm A Fuse 3 500mA 250V fast type 5x20 mm µA mA Fuse 4 200mA 250V fast type 5x20 mm hFE 3 ...

Страница 53: ...5 6 Press the POWER to turn the Meter off and remove all connections from the terminals Use a coin to open the accessories compartment at the top of the front case Use a coin to open the battery compartment inside the accessories compartment located at the top of he front case Remove all the batteries from the battery compartment Replace the battery with new 6pcs of 1 5V battery R14 Rejoin the bat...

Страница 54: ...processor and 600 x 800 pixel or better monitor Microsoft Windows 95 or above At least 8MB of RAM At least 8MB free space in hard drive Can access to a local or a network CD ROM A free serial port A mouse or other pointing device supported by Windows 52 Model UT803 OPERATING MANUAL System Requirements for Installing the UT803 Interface Program l l l l l l l ...

Страница 55: ...RS232C Serial Port UT803 Back Faceplate To COMPUTER 53 Model UT803 OPERATING MANUAL A Connecting between the Meter and computer see figure 14 Figure 14 ...

Страница 56: ... Stop bit 1 Data bits 7 Parity Odd 54 Model UT803 OPERATING MANUAL B RS232C Port Cable D sub 9 Pin Male 1 DCD 2 RXD 3 TXD 4 DTR 5 SG 6 DSR 7 RTS 8 CTS 9 RI Computer D sub 9 Pin Female 1 DCD 3 TXD 2 RXD 4 DTR 5 SG 6 DSR 7 RTS 8 CTS 9 RI D sub 25 Pin Female 8 DCD 2 TXD 3 RXD 20 DTR 7 SG 6 DSR 4 RTS 5 CTS 22 RI The Meter ...

Страница 57: ...hown at the Control Panel System Device Manager Make sure connect the Meter and the computer with the same port Please refer to the included Installation Guide Computer Interface Software for installing and operating instructions of the UT803 Interface Program The Meter is to be supplied from an identical USB port complying with the requirement of Limit Power Source 55 Model UT803 OPERATING MANUAL...

Страница 58: ...UNI TREND TECHNOLOGY DONG GUAN LIMITED Address Dong Fang Da Dao Bei Shan Dong Fang Industrial Development District Hu Men Town Dong Guan City Guang Dong Province China Headquarters Uni Trend International Limited Address Rm901 9 F Nanyang Plaza 57 Hung To Road Kwun Tong Kowloon Hong Kong Tel 852 2950 9168 Fax 852 2950 9303 Email info uni trend com http www uni trend com ...

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